Metal-shearing machine.



. UNITED STATES PATENT QFFICE.

BRUNO WVESSELMANN, OF GOTTINGEN, GERMANY.

METAL-SHEARING MACHINE.

SPECIFICATION forming part of Letters Patent No. 629,633, dated July 25,1899.

Application filed December 8, 1898- Serial No. 698,653. iNo modeldperor, residing at 58 Friedlan'der Weg, Got-j tingen, in the Province ofHanover, Kingdom of Prussia, Germany, have invented new and usefulImprovements in or Connected with Metal-Shearing Machines, of which thefolthe size and power of the shears, is shaped as,

- of Fig. 4..

lowing is a specification. The present invention improvement in theconstruction and shape of the framing of metal-shearing machines andinthe manner ofsecurin g the lower blade in the same. I

' The accompanying sheet of drawings clearly illustrates my invention.

Figure 1 is aside elevation of the metal shearing machine. Fig. 2 is aface view of the shaped plate before being bent to the re quiredformation. Figs. 3,4, and 5'arecrosssections showing various forms intowhich the bed-plate may be bent. According to my invention I form theframing or stand from a single metallic plate of a suitable contour, andI bend or press the same to the required shape.- The improved framing orbed-plate, as indicated in the drawings, is such that thesame may bereadily formed from a single plate of metal. This metallic plate a, thethickness or strength of which would vary according to shown in Fig. 2.The plate a is thenbent or pressed by suitable means at the pointsindicated by the dotted lines until it assumes the form-shown incross-section in Fig. 3 or that The bent-in portion 0 of the plate a(shown in Fig. 3) and the bent-out portion 0 in Fig. 4 serve as the footby means of which the shears are supported. If desired,

' the foot 0 may be separate from and secured to the framing a b, asindicated in Fig. 5. \Vith this improved formation of bed-plate thecutting-blades m and m are so arranged relatively to each other that thelever h,-to which the blade m is secured, lies in an angular recessformed by the bending back of the upper portion a of the bed-plate, theunder portion 1) of the bed-plate carrying the fixed blade m. By thisarrangement the out has for its object an portions ff of the work F canboth be conducted to the rear of the shears below the pivot-bolt 0without necessitating any appreciable bending; of the cut portions ofthe -work. The feeding forward of the work is thus greatly facilitated,as only a slight amount of frictionv and springing of the cut plates isinduced. "In addition to the foregoing advantages the shears arestrengthened by the improved formation of bed-plate or framing.

They are light and can be. constructed at a cheaper rate.

The lower blade m is secured to the framing'ab c by means of bolts 8,which may be adjusted invertical directionin slots The under edge of theblade rests upon set-screws tt, passing through block-bends n, screwedto. the framing a b o. By this means the lower blade m-,is securelyfastened to the framing and so prevented from being displacedrelativelyto the movable blade m during the outting operation and at the same timeis capable of. being tilted in either direction, to front or rear. Byadj ustment of the bolts sin the slots 2' the blade m may be given sucha position relatively to the movable blade m as is necessaryfor theparticular material to be cut, I

and .by screwing-up or loosening the setscrews 25 t, as described, itcan be held fixed in such position so. that e en under the strongestpressure displacement of the blade is prevented. j I

By having the upper front portion of the metallic plate cut away, asindicated by the cut-out in Fig. 2, a space is formed for receiving theshearing-blades, and the cut part-sv of the work can be carried backwardor away from the blades without materially bending such work.

Having now particularly described and ascertained the nature of my saidinvention and in what manner the same is to be performed, I declare thatwhat I claim is' 1. A metal-shearing machine comprising a stand orframe, having an upper vertical por tion cut away at one end, ahorizontal portion also cut away at one end, and a loWer-verti calportion, a stationary cutting blade se-' cured to the lower verticalportion adjacent.

to the cut-away end of the horizontal portion,

an operating-leverfulerumed to the upper vertical portion and a movablecutting-blade carried thereby, as and for the purpose set forth.

2. A metal-shearing machine having a frame provided with a blade m, abolt-andslot connection for adjustably securing the blade to the frame,and adjustable supporting-screws If for the blade at the lower edge ofthe latter substantially as described.

In testimony whereof I afiix my signature in presence of two Witnesses.

' BRUNO VVESSELMANN,

\Vitnesses:

HENRY HASPER, EMIN L. GOLDSCHMIDT.

